To look at the environmental radiation data measured at the radiation monitoring post, please click on the Prefecture. To look at the data measured by the radiation survey meter, please click on "Dose Rate in Japan".
[ Dose Rate measured at the Monitoring Post ]

Here are the Districts and Prefectures.
Hokkaido & Tohoku District
Kanto District
Chubu District
Kinki District
Chugoku District
Shikoku District
Kyushu & Okinawa District
[ Dose Rate measured by the Survey Meter ]